GE Fuji Electric AF-300 Mini Startup Manual page 93

[14] Er3 CPU error
Problem A CPU error (e.g. erratic CPU operation) occurred.
Possible Causes
(1) High intensity noise was
applied to the drive.
Possible Causes
(2) The printed control
circuit board in the drive
malfunctioned.
[15] Er6 Operation protection
Problem An error occurred due to incorrect operation of the motor.
Possible Causes
(1) The key was pressed
when H96 = 1 or 3.
(2) The start check function
was activated when
H96 = 2 or 3.
[16] Er8 RS485 communications error
Problem A communications error occurred during RS485 communications.
Possible Causes
(1) High-level controllers
(e.g. PLCs and per-
sonal computers) did not
operate due to incorrect
settings and/or defective
software/hardware.
(2) Relay converters (e.g.
RS232C/RS485 con-
verter) did not operate
due to incorrect connec-
tions and settings, and
defective hardware.
(3) Broken communications
cable or poor contact.
What to Check and Suggested Measures
CHECK
Check if appropriate noise control measures have been implemented (e.g. correct grounding and routing
of control and main circuit wires).
SUGGESTED ACTIONS
– Improve noise control.
What to Check and Suggested Measures
SUGGESTED ACTIONS
– Replace the board.
What to Check and Suggested Measures
CHECK
Change the setting for H96 so that the STOP key priority function is invalid to ensure that the drive
does not operate unexpectedly.
CHECK
Check that Er6 occurs when:
– The power is switched ON
– An alarm is released (the key is pressed)
– The link command (LE) has switched the drive operations.
SUGGESTED ACTIONS
– Reconsider the running sequence to avoid input of the run command when Er6 has occurred.
– Change the setting for H96 so that the STOP key priority function is invalid to ensure the drive does
not operate unexpectedly.
(To reset the alarm, turn the run command off.)
What to Check and Suggested Measures
CHECK
Check the controllers.
SUGGESTED ACTIONS
– Remove the cause of the controller error.
CHECK
Check the converter (e.g. check for poor contact).
SUGGESTED ACTIONS
– Change the various converter settings, reconnect the wires, or replace hardware as appropriate.
CHECK
Check continuity of the cable, contacts and connections.
SUGGESTED ACTIONS
– Replace the cable.
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